Science writer Margaret Wertheim shares the unique educational tool she uses to encourage more environmental collective action — crocheting.This talk was filmed at TEDxDublin. All TEDx events are organized independently by volunteers in the spirit of TED's mission of ideas worth spreading. To learn more about TEDxSHORTS, the TEDx program, or give feedback on this episode, please visit http://go.ted.com/tedxshorts.